fix(web): resolve dashboard widget errors and deployment config

- Add workspace ID to ActiveProjectsWidget API calls (fixes 401/403)
- Add ORCHESTRATOR_URL and ORCHESTRATOR_API_KEY to web service in swarm
  compose (fixes 503 on orchestrator proxy routes)
- Add internal network to web service for orchestrator connectivity
- Update .env.example domain examples to single-level subdomains
- Fix version display on login page from v0.1 to v0.0.20

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/app/(auth)/login/page.tsx

@@ -326,7 +326,7 @@ function LoginPageContent(): ReactElement {
         </div>
 
         <div className="mt-6 flex justify-center">
-          <AuthStatusPill label="Mosaic v0.1" tone="neutral" />
+          <AuthStatusPill label="Mosaic v0.0.20" tone="neutral" />
         </div>
       </AuthCard>
     </AuthShell>